GWorkspace

http://www.gnu.org/software/gnustep/experience/GWorkspace.html
GWorkspace is the official GNUstep workspace and file manager. It is a clone of NeXT's workspace manager. It is ready for daily usage, and is available in English, French, German, Italian and Romanian. Besides its standard Contents Inspectors (App, Folder, Image, Sound, Pdf-Ps, Rtf, text, Plist, Strings and Inspector viewers), GWorkspace can dynamically load other modules which you can build separately. Simply put them in a place where GWorkspace looks for them, (ie ~/GNUstep/Library/GWorkspace). In the same way you can add other viewers besides the standard Browser, Icon and Small Icons viewers.

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